A cost of 4 for 140 with what seems like a niche effect looks ok at best
Berserk Green removals sparse, but Berserk (sometimes) does the trick
There are a treasure trove of artifacts that cost zero or one mana, from Ornithopter to Chromatic Sphere, that can turn this into a broken card draw engine
You can select them in any way you wantmaybe you just like those colorsbut here are three things to keep an eye out for: Any strong rares in those colors that you're excited to play A lot of removal cards (cards that destroy or otherwise deal with your opponent's creatures) Evasion (flying creatures or hard-to-block cards) Additionally, another huge element to look out for are good synergies and multicolor cards
The secret pack can be discovered for 24 hours by either pulling a rare card from another card pack, or by crafting a SR or UR rarity from that pack, like the Chamber Dragonmaid card
*Please note that the Minimum Grade (MG) option is only available on select service levels